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if not modules then modules = { } end modules ['mtx-fcd'] = {
version = 1.002,
comment = "companion to mtxrun.lua",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files",
comment = "based on the ruby version from 2005",
}
-- This is a kind of variant of the good old ncd (norton change directory) program. This
-- script uses the same indirect cmd trick as Erwin Waterlander's wcd program.
--
-- The program is called via the stubs fcd.cmd or fcd.sh. On unix one should probably source
-- the file: ". fcd args" in order to make the chdir persistent.
--
-- You need to create a stub with:
--
-- mtxrun --script fcd --stub > fcd.cmd
-- mtxrun --script fcd --stub > fcd.sh
--
-- The stub starts this script and afterwards runs the created directory change script as
-- part if the same run, so that indeed we change.
local helpinfo = [[
<?xml version="1.0"?>
<application>
<metadata>
<entry name="name">mtx-fcd</entry>
<entry name="detail">Fast Directory Change</entry>
<entry name="version">1.00</entry>
</metadata>
<flags>
<category name="basic">
<subcategory>
<flag name="clear"><short>clear the cache</short></flag>
<flag name="clear"><short><ref name="history"/> [entry] clear the history</short></flag>
<flag name="scan"><short>clear the cache and add given path(s)</short></flag>
<flag name="add"><short>add given path(s)</short></flag>
<flag name="find"><short>find given path (can be substring)</short></flag>
<flag name="find"><short><ref name="nohistory"/> find given path (can be substring) but don't use history</short></flag>
<flag name="stub"><short>print platform stub file</short></flag>
<flag name="list"><short>show roots of cached dirs</short></flag>
<flag name="list"><short><ref name="history"/> show history of chosen dirs</short></flag>
<flag name="help"><short>show this help</short></flag>
</subcategory>
</category>
</flags>
<examples>
<category>
<title>Example</title>
<subcategory>
<example><command>fcd --scan t:\</command></example>
<example><command>fcd --add f:\project</command></example>
<example><command>fcd [--find] whatever</command></example>
<example><command>fcd --list</command></example>
</subcategory>
</category>
</examples>
</application>
]]
local application = logs.application {
name = "mtx-fcd",
banner = "Fast Directory Change 1.00",
helpinfo = helpinfo,
}
local report = application.report
local writeln = print -- texio.write_nl
local find, char, byte, lower, gsub, format = string.find, string.char, string.byte, string.lower, string.gsub, string.format
local mswinstub = [[@echo off
rem this is: fcd.cmd
@echo off
if not exist "%HOME%" goto homepath
:home
mtxrun --script mtx-fcd.lua %1 %2 %3 %4 %5 %6 %7 %8 %9
if exist "%HOME%\mtx-fcd-goto.cmd" call "%HOME%\mtx-fcd-goto.cmd"
goto end
:homepath
if not exist "%HOMEDRIVE%\%HOMEPATH%" goto end
mtxrun --script mtx-fcd.lua %1 %2 %3 %4 %5 %6 %7 %8 %9
if exist "%HOMEDRIVE%\%HOMEPATH%\mtx-fcd-goto.cmd" call "%HOMEDRIVE%\%HOMEPATH%\mtx-fcd-goto.cmd"
goto end
:end
]]
local unixstub = [[#!/usr/bin/env sh
# this is: fcd.sh
# mv fcd.sh fcd
# chmod fcd 755
# . fcd [args]
ruby -S fcd_start.rb $1 $2 $3 $4 $5 $6 $7 $8 $9
if test -f "$HOME/fcd_stage.sh" ; then
. $HOME/fcd_stage.sh ;
fi;
]]
local gotofile
local datafile
local stubfile
local stubdata
local stubdummy
local stubchdir
if os.type == 'windows' then
local shell = "cmd"
-- local shell = "powershell"
if shell == "powershell" then
gotofile = 'mtx-fcd-goto.ps1'
datafile = 'mtx-fcd-data.lua'
stubfile = 'fcd.cmd'
stubdata = mswinstub
stubdummy = '# no dir to change to'
stubchdir = '. Set-Location %s' -- powershell
else
gotofile = 'mtx-fcd-goto.cmd'
datafile = 'mtx-fcd-data.lua'
stubfile = 'fcd.cmd'
stubdata = mswinstub
stubdummy = 'rem no dir to change to'
stubchdir = 'cd /d "%s"' -- cmd
end
else
gotofile = 'mtx-fcd-goto.sh'
datafile = 'mtx-fcd-data.lua'
stubfile = 'fcd.sh'
stubdata = unixstub
stubdummy = '# no dir to change to'
stubchdir = '# cd "%s"'
end
local homedir = os.env["HOME"] or "" -- no longer TMP etc
if homedir == "" then
homedir = format("%s/%s",os.env["HOMEDRIVE"] or "",os.env["HOMEPATH"] or "")
end
if homedir == "/" or not lfs.isdir(homedir) then
os.exit()
end
local datafile = file.join(homedir,datafile)
local gotofile = file.join(homedir,gotofile)
local hash = nil
local found = { }
local pattern = ""
local version = modules['mtx-fcd'].version
io.savedata(gotofile,stubdummy)
if not lfs.isfile(gotofile) then
-- write error
os.exit()
end
local function fcd_clear(onlyhistory,what)
if onlyhistory and hash and hash.history then
if what and what ~= "" then
hash.history[what] = nil
else
hash.history = { }
end
else
hash = {
name = "fcd cache",
comment = "generated by mtx-fcd.lua",
created = os.date(),
version = version,
paths = { },
history = { },
}
end
end
local function fcd_changeto(dir)
if dir and dir ~= "" then
io.savedata(gotofile,format(stubchdir,dir,dir))
end
end
local function fcd_load(forcecreate)
if lfs.isfile(datafile) then
hash = dofile(datafile)
end
if not hash or hash.version ~= version then
if forcecache then
fcd_clear()
else
writeln("empty dir cache")
fcd_clear()
os.exit()
end
end
end
local function fcd_save()
if hash then
io.savedata(datafile,table.serialize(hash,true))
end
end
local function fcd_list(onlyhistory)
if hash then
writeln("")
if onlyhistory then
if next(hash.history) then
for k, v in table.sortedhash(hash.history) do
writeln(format("%s => %s",k,v))
end
else
writeln("no history")
end
else
local paths = hash.paths
if #paths > 0 then
for i=1,#paths do
local path = paths[i]
writeln(format("%4i %s",#path[2],path[1]))
end
else
writeln("empty cache")
end
end
end
end
local function fcd_find()
found = { }
pattern = lower(environment.files[1] or "")
if pattern ~= "" then
pattern = string.escapedpattern(pattern)
local paths = hash.paths
for i=1,#paths do
local paths = paths[i][2]
for i=1,#paths do
local path = paths[i]
if find(lower(path),pattern) then
found[#found+1] = path
end
end
end
end
end
local function fcd_choose(new)
if pattern == "" then
writeln(format("staying in dir %q",(gsub(lfs.currentdir(),"\\","/"))))
return
end
if #found == 0 then
writeln(format("dir %q not found",pattern))
return
end
local okay = #found == 1 and found[1] or (not new and hash.history[pattern])
if okay then
writeln(format("changing to %q",okay))
fcd_changeto(okay)
return
end
local offset = 0
while true do
if not found[offset] then
offset = 0
end
io.write("\n")
for i=1,26 do
local v = found[i+offset]
if v then
writeln(format("%s %3i %s",char(i+96),offset+i,v))
else
break
end
end
offset = offset + 26
if found[offset+1] then
io.write("\n[press enter for more or select letter]\n\n>> ")
else
io.write("\n[select letter]\n\n>> ")
end
local answer = lower(io.read() or "")
if not answer or answer == 'quit' then
break
elseif #answer > 0 then
local choice = tonumber(answer)
if not choice then
if answer >= "a" and answer <= "z" then
choice = byte(answer) - 96 + offset - 26
end
end
local newdir = found[choice]
if newdir then
hash.history[pattern] = newdir
writeln(format("changing to %q",newdir))
fcd_changeto(newdir)
fcd_save()
return
end
else
-- try again
end
end
end
local function globdirs(path,dirs)
local dirs = dirs or { }
for name in lfs.dir(path) do
if not find(name,"%.$") then
local fullname = path .. "/" .. name
if lfs.isdir(fullname) and not find(fullname,"/%.") then
dirs[#dirs+1] = fullname
globdirs(fullname,dirs)
end
end
end
return dirs
end
local function fcd_scan()
if hash then
local paths = hash.paths
for i=1,#environment.files do
local name = environment.files[i]
local name = gsub(name,"\\","/")
local name = gsub(name,"/$","")
local list = globdirs(name)
local done = false
for i=1,#paths do
if paths[i][1] == name then
paths[i][2] = list
done = true
break
end
end
if not done then
paths[#paths+1] = { name, list }
end
end
end
end
local argument = environment.argument
if argument("clear") then
if argument("history") then
fcd_load()
fcd_clear(true)
else
fcd_clear()
end
fcd_save()
elseif argument("scan") then
fcd_clear()
fcd_scan()
fcd_save()
elseif argument("add") then
fcd_load(true)
fcd_scan()
fcd_save()
elseif argument("stub") then
writeln(stubdata)
elseif argument("list") then
fcd_load()
if argument("history") then
fcd_list(true)
else
fcd_list()
end
elseif argument("help") then
application.help()
elseif argument("exporthelp") then
application.export(argument("exporthelp"),environment.files[1])
else -- also argument("find")
fcd_load()
fcd_find()
fcd_choose(argument("nohistory"))
end
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